Institution
Ghulam Ishaq Khan Institute of Engineering Sciences and Technology
Education•Topi, Pakistan•
About: Ghulam Ishaq Khan Institute of Engineering Sciences and Technology is a education organization based out in Topi, Pakistan. It is known for research contribution in the topics: Quantum efficiency & Diode. The organization has 618 authors who have published 940 publications receiving 10674 citations.
Papers published on a yearly basis
Papers
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TL;DR: The influence of substrate surface temperature and oxidation state on the flattening of alumina and stainless steel particles and the morphology of resulting splats were studied in this article, where splat morphology of both materials transformed from splashed one to disk-shaped one.
Abstract: The influence of the substrate surface temperature and oxidation state on the flattening of alumina and stainless steel particles and the morphology of resulting splats were studied in the current work. Particles were sprayed by a d.c. plasma gun on polished plain carbon steel and low alloy steel substrates preheated by plasma jet at different temperatures in air or in an oxidation limiting nitrogen shroud system added around substrates. Extensively fragmented splats of alumina and stainless steel were collected on substrates kept at room temperature. On substrates preheated to 573 (±20) K, the splat morphology of both materials transformed from splashed one to disk-shaped one. Optimal flattening degrees for stainless steel and alumina splats were measured for this substrate temperature, and the former particles exhibited flattening degree of the order of 1.2 times those of alumina. On plain carbon steel substrates, preheated in air at temperatures well above 573 K, the particle flattening degree decreased drastically and collected splats were extensively fragmented with bubbles like holes in them. The splashing and bubble formation in splats on preheated substrate were more dominating for low viscosity and higher Reynolds number stainless steel particles. The splat flattening–splashing and bubble formation were effectively limited by preheating substrates in the nitrogen shroud system. After a detailed characterization of substrate surface oxide layers, formed under different preheating conditions, it was concluded that splat morphology and flattening were only partially affected by the oxide chemical composition and thickness and were principally controlled by the surface roughness (more exactly its topography), induced by the oxidation.
57 citations
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TL;DR: Numerical simulation results are provided to show the superiority and the advantages of the proposed controller such as robustness to external disturbances, no chattering, less control effort and accurate output tracking, thus proposed controller can be considered as a suitable choice for designing automatic insulin pumps for diabetes patients.
57 citations
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TL;DR: Experimental results obtained using orthorhombic ABO3 perovskites demonstrate that the proposed prediction model is more efficient, robust and fast than those based on artificial neural networks.
56 citations
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TL;DR: In this paper, diamond particles were used as uncoated, copper(nickel) coated (CuD) and chromium coated (CrD), and the cold compacted pellets were sintered in a vacuum tube furnace.
56 citations
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TL;DR: In this paper, a systematic approach has been employed to statistically analyze the Faradaic and non-Faradaic mechanism on electrodes, and two strategies have been adopted for device design, i.e. symmetric and asymmetric, by using the metal oxide synthesized via sonochemical method and activated carbon electrode.
Abstract: A systematic approach has been employed to statistically analyze the Faradaic and non-Faradaic mechanism on electrodes. Two strategies have been adopted for device design, i.e. symmetric and asymmetric, by using the metal oxide synthesized via sonochemical method and activated carbon electrode. Structural and electrochemical characterization have been performed to investigate the morphological and electrochemical properties of electrode material. Both devices are electrochemically examined by using cyclic voltammetry (CV) and Galvanostatic charge discharge (GCD) measurements to evaluate the electrochemical performance. CV curves are further explored to study the capacitive and diffusive contribution in both devices. The diffusive-controlled contribution at low scan rate in asymmetric device is about 65% which is suitable for supercapattery applications while the symmetric device shows 91% diffusive contribution presenting better performance for battery applications. The strategy unveils the high capacitive and diffusive contribution in asymmetric and symmetric devices, respectively. Results reveal that same material can be exploited for supercapattery and battery applications by implementing different device architectures.
56 citations
Authors
Showing all 626 results
Name | H-index | Papers | Citations |
---|---|---|---|
Wajid Ali Khan | 128 | 1272 | 79308 |
Shuichi Miyazaki | 69 | 455 | 18513 |
Muhammad Zubair | 51 | 806 | 10265 |
Mohammad Islam | 44 | 192 | 9721 |
Asifullah Khan | 38 | 192 | 5109 |
Muhammad Waqas | 32 | 383 | 7336 |
Rana Abdul Shakoor | 30 | 140 | 3244 |
Noor Muhammad | 29 | 160 | 2656 |
Abdul Majid | 28 | 231 | 3134 |
Muhammad Abid | 27 | 377 | 3214 |
Iftikhar Ahmad | 26 | 143 | 2500 |
Shaheen Fatima | 24 | 79 | 2287 |
Ghulam Hussain | 24 | 127 | 1937 |
Zubair Ahmad | 24 | 145 | 1899 |
Muhammad Zahir Iqbal | 23 | 129 | 1624 |